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General Motors' Cadillac division has always prided itself on its super-quiet cars, so the General's promotion of its "ultrasonic" welding technique for the upcoming ELR extended-range plug-in may or may not make sense, depending on how you define the term. In this case, GM says the ultrasonic welding allows machines to put together metal electrode tabs on the car's 16.5-kWh lithium-ion battery pack through rapid motion that creates heat through friction. Most importantly, it eliminates the need

Cadillac is mounting big-old 20-inch wheels on its 2014 ELR extended-range plug-in that is debuting early next year, but the General Motors division is doing a lot more than that to make sure the 4,000-pound car stays steady on the road.

While Jerry Seinfeld was gallivanting around LA with Sarah Silverman in a Jaguar XKE, our favorite car-loving comedian, Jay Leno, was checking out the all-new 2014 Cadillac ELR. Set to go on sale later this year, Cadillac brought its ELR to Jay Leno's Garage to show off some of its styling and technology as well as give Leno some seat time in the range-extended EV. Leno owns both a Volt and a CTS-V, and the ELR is a kind combination of the two (sort of).

This year's annual Eyes on Design awards were presented at the end of press days for the Detroit Auto Show on Tuesday. Given out for the best production and concept car designs that debuted at the show, and voted on by an esteemed panel of actual car designers, this year's award for best production vehicle design went to the 2014 Cadillac ELR. The 2014 Chevrolet Corvette, which was the show favorite among Autoblog editors, apparently did not impress the Eyes on Design judges enough with its all-

The Cadillac design and engineering teams were smiling like a bunch of proud papas here in Detroit this morning, as the Wreath and Crest crew pulled the curtain back on their 2014 ELR. The house was packed for the ELR's coming out party, and reaction was enthusiastic amongst the murmuring media, as far as we could gather, while the flashes were firing.